Adjustable regulating-cock.



W. N. BEST.

ADJUSTABLE REGULATING COCK.

APPLICATION FILED DBO.30,1907.

904,299. Patented Nov. 17, 1908.

' .wlryzssEs INVENTOB QM. 1 77 52! am/[199,96

' BY 45% M150 A TTORNE Y 8 WILLIAM N. BEST, OF NEW YORK, N. Y.

ADJUSTABLE 'REGULA-TING-COGK.

Specification of Letters Patent.

Patented Nov. 17, 1908.

Application filed December 80, 1907. Serial No. 408,671.

To all whom it may 'coac em:

Be it known that I, WILLIAM N. Bns'r, a

.citizen of the United States, and a resident of the city .of New York, borough of Brook'- lyn in the county of'Kings and State of New York, have invented a new and Improved Adjustable Regulating- Cock, of which the following is a full, clear, and exact description. 1

' This invention relates to certain improvements in cocks adapted for use with gas burners for lighting or heating purposes, and relates more particularly to certain improvements whereby the flow of gas is rendered more uniform and the extent to which the cockanay be opened, limited. The fluctuation in the pressure of the gasdelivered to the gas burner, particularly one used for lighting purposes, is highly objectionable,

ing plug of the gas cock with an inlet opening of greater size than the outlet opening, whereby the full gas pressure within the supply conduit exists up to the outlet from the turning plug, and I also provide the inlet conduit adjacent the plug, with a plurality of screens, preferably of wire gauze and preferably of varying mesh, the screen -of finest mesh being adjacent the plug and the screen of coarsest mesh being adjacent the inlet or supply conduit.

In this art, it is often found that the maximum lighting or heating effect may be obtained when less than the maximum quantity of gas is delivered. For instance, in a burner having an incandescent mantle, less than the maximum supply of gas may heat the mantle to such a temperature that the maximum lighting effect is produced, and the delivery of an increased quantity of gas does not increase the illumination. The opening of the gas cock to its full width therefore results in an unnecessary waste of gas. In order that no more than the desired quantity of gas be used, I provide detachable means adapted to cooperate with the turning plug, whereby the extent to which the turning plug may be rotated is limited.

Reference is to be had to the accompanying drawings, forming a part of th1s specificatlon, in which slmllar characters of reference indicate corresponding parts, in both the figures, and in which Figure 1 is a top plan view of a cock constructed in accordance with my.invention; and Fig. 2 is a longitudinal section of the same.

My improved regulating cock embodies in the preferred form of its construction, a body 10, having inlet and outlet passages 11 and 12, with suitable connections whereby it may be secured to suitable inlet and outlet conduits. The inlet passage 11 is preferably of considerably greater size than the outlet passage 12,-and within the inlet passage are a plurality of screens 13, 14. and 15. These screens are preferably formed of wire gauze, the screen 13 adjacent the connection to the supply pipe being of the coarsest mesh and the screen 15-toward the discharge of outlet passage being of the finest mesh. The gas in passing through the screens and the small chambers formed between adjacent screens, is partially obstructed, and the fluctuations 'in the pressure almost, if not entirely, eliminated. The screens may be of any form desired and held in place in any suitable manner, but preferably the inlet assage is provided with a shoulder 16. ach of the screens is substantially cup-shaped and frictionally engages with .the walls of the passage. The finest screen 15 is pressed inwardly against the shoulder 16, and each of the other screens is pressed inwardly in succession until it engages with the shoulder or flange of the pre- 1 viously inserted screen.

The device includes a turning plug 17, preferably tapered or conical in form and having a passage 18 therethrough. The inlet end of this passage is of substantially the same size as the supply passage 11, and the outlet end of the passage 18 is of substantially the same size as the outlet passage 12.- Upon opening the cock, the larger end of the passa e 18 communicates with the passage 11 be ore the smaller end communicates with the passage 12, so that the full gas pressure of the main may exhaust within the interior of the turning plug before it is permitted to escape through the outlet passage 12.

The turning plug is held in place in any suitable manner, as, for instance, by a nut 1.) and a washer 20, and is rotated in any suitable manner, as, for instance, by a handle 21.

For controllin the eatent to which the plug may be rotate said plug carries a radiallydisposed pin 22, which-may engage with a v 7 stop 23 on the body when the cock is in its closed position, and may engage with an adjustable regulating guard plate 24 when the cock is in its open position. The plate 24 1 partially encircles the turning plug and engages with the fiat surface 25 of the body.

The plate is very narrow and is so formed that the pin 22 may engage with the end thereof to limit the movement of the plug. lhe plate is provided with a curved slot 26,

concentric with the wall of the turning plug,

said plate being held in place by two adjust ing screws 28 and 29,ext ending through said slot into the u per surface 25 of the body. The distance between the two regulating screws 28 and 29 is less than the total length of the slot, whereby by unloosening the screws, the plate may be moved circumferentially to vary the position of the endthereof which is engaged by the pin 2 2." With the plate rigi y secured *the -lposit i on shown in'Fig. 1, the coteay. e opened'to. the maximum extent, but hyi-loosening fi-the screws 28 and 29 andinyingfthejplate short distance contra-clockwise -and';t 1ghten ing the screws, th e plug onlybe'rofta to open the passageway ajlimited exten In applying thejcock, theii1ser determines" by experience the-extent to which it necesf sary to open the cock to obtain the maximiim efliciency, and then places theplateQAe with one end thereof in engagement .with "the pin-I 22 and rigidly secures said plate in position by tightening the screws 23 and: 29. Thereafter, it is' no "longer necessaryto use par ticular care in opening the cock, as it may be opened to the limiting extent, and the user will know that he is then gaining the-maximumefliciency without unnecessary waste of gas.

The; device is also useful in positions where only a limited quantity of heat or light desired, as the plate may be readily adjusted only every small quantity of gas.

Having thus described my invention, I claim as new and desire to secure by.Letters Patent:

l. A cock, including a body and a turning plug, the body having a bore of one diameter leading to the lug and a bore of different diameter lea 'ng from the plug, the bore of larger diameter presenting an inwardly-directed shoulder adjacent the plug,

mentioned bore and adjacent said shoulder, each of said screens havin a transverse portactin with the inner surface of the'bore to hold t e screen in place and also serving to space said screens apart, said screens being of varying mesh and the screen of finest mesh being adjacent the shoulder.

I 2. An adjustable regulating cock, including a casing and a turning plug, said casin .havin a flat surface adjacent the plug an encirc ing the same, -a curved platesecured --toi';said :surface and artially encircling the 1plate having a slot therein con- WILLIAM N. BEST, ji .Wit esses :ZLEVEBARD B. MARSHALL, CLAIR W. FAIRBANK.-

the-plate and having one end utingfa stop, adjust ng screws to such a position that it is possible to'use and a plurality of screens Within said last- I tion and an annular cylin rical portion con- 

